arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1306.2430math.PR
收藏

Wiener空间上的比较不等式

Comparison inequalities on Wiener space

Ivan Nourdin, Giovanni Peccati, Frederi Viens

摘要:

在Wiener空间上定义了一个协方差型算子:对于F和G两个随机变量,在具有平方可积Malliavin导数的随机变量的索伯列夫空间$D^{1,2}$中,设$Gamma_{F,G}=$,其中$D$是Malliavin导数算子,$L^{-1}$是Ornstein-Uhlenbeck半群的生成元的伪逆.利用$Γ$推广了Wiener空间上向量和随机场的协方差和典范度量的概念,证明了Wiener空间上相应的非高斯比较不等式,推广了Sudakov-Fernique关于高斯场期望上确界比较的结果和关于高斯向量泛函的Slepian不等式.这些结果证明了使用所谓的智能路径方法在维纳空间,并通过各种例子说明。我们还说明了使用相同的方法,通过证明相关和非平稳非高斯随机介质中的自旋系统的Sherrington-Kirkpatrick普适性结果。

英文摘要:

We define a covariance-type operator on Wiener space: for F and G two random variables in the Gross-Sobolev space $D^{1,2}$ of random variables with a square-integrable Malliavin derivative, we let $Gamma_{F,G}=$ where $D$ is the Malliavin derivative operator and $L^{-1}$ is the pseudo-inverse of the generator of the Ornstein-Uhlenbeck semigroup. We use $Γ$ to extend the notion of covariance and canonical metric for vectors and random fields on Wiener space, and prove corresponding non-Gaussian comparison inequalities on Wiener space, which extend the Sudakov-Fernique result on comparison of expected suprema of Gaussian fields, and the Slepian inequality for functionals of Gaussian vectors. These results are proved using a so-called smart-path method on Wiener space, and are illustrated via various examples. We also illustrate the use of the same method by proving a Sherrington-Kirkpatrick universality result for spin systems in correlated and non-stationary non-Gaussian random media.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑